| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 9 | 
                                    
                                    2.9%
                                 | 
| 2 | Weekly | 6 | 
                                    
                                    2%
                                 | 
| 3 | Monthly | 259 | 
                                    
                                    84.4%
                                 | 
| 4 | Quarterly | 31 | 
                                    
                                    10.1%
                                 | 
| 5 | Semi-annual | 2 | 
                                    
                                    0.7%
                                 | 
| 6 | Annual | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 3413 |